Whenever I (or my boss on his computer) go to View Your Posts, we aren't able to click on anything without being redirected, same thing happens if we use the search bar and try clicking on anything. If you're already aware of this issue than I apologize.

Will you accept another set of eyes? There has got to be a way to fix this, get the site "not hacked" and onto https. I'm assuming thumper has the hosting contract and the original credentials. It might be as simple as moving hosts and importing the DB into a clean copy of phpBB, then enabling https with a Let's Encrypt cert.